The moon (and the sun, FTM) always seem to look biggest near the horizon and tiniest when high in the sky. It's actually an optical illusion. The sun and moon never change their size as they course through the sky. They always looks big relative to things (buildings, trees, mountains, etc.) far away on the horizon that share the same viewing field.
Are people saying it's a phenomenon globally right now? That's what the BBC seems to be saying. How long til there are crackpot global warming/ozone layer crackpot "scientific" warnings?
The know-it-all Slashdotters say "Moon Illusion" is simply an occipital lobe processing error. :)